Sealing tool



E. E. FLORA SEALING TOOL Filed March 4, 1920 Jec'eased a) ZueZZafl/Yorufrecwa'r 7 JM. M w

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ELLSWORTH E. FLORA, DECEASED, LATE OF CHICAGO, ILLINOIS; BY LUELLA B.FLORA,

EXECUTEIX, O'F GHICAGO, ILLINOIS, ASSIGNOR IO CONSOLIDATED STEEL fiTRAP-I ING COMPANY, OF CHICAGO, ILLINOIS, A CURPORATIQN OF DELAWARE.

SEALING- T001].

Application filed March 4:, 1920. Serial No. 363,270.

To aZZ whom it may concern:

Be it known that I, ELLSWORTH Fl. FLORA, deceased, by Luella B. Flora,executrix, a citizen of the United States, residing at Chicago, in thecounty of Cook, State of Illinois, have invented an Improvement inSealing Tools, of which-the following is a specification.

This invention relates to tools for forming joints in mutuallyoverlapped ends of fiat tensioned metallic box strapping andparticularly to an improved means for forming or flattening the top ofthe type ofjoint in said box strapping, which is made by crimping thestrap edgewise to'produce a construction such as shown in the crosssection of Fig. 5.

It is an object of the invention to produce an efiicient, economical,and simple construction of the character described.

In the drawings:

Fig; l is an elevation of the operating parts of a sealing tool in openposition, the strap being shown engaged by the tool at the beginning ofthe operation,

Fig. 2 is an elevation of the tool in its closed position after thejoint has been formed, 1

Fig. 3 is a sectional elevation on the line a-a of Fig. 2,

Fig. 4- is a bottom view of the tool in its open position as shown inFig. 1, and

Fig. 5 is a cross sectional'view of a joint such as formed by the tool.

The sealing tool of this invention is constructed after the manner of apair of pliers and in its general form is similar to that of the FloraPatent, 1,038,109, dated September 10, 1912, and it makes the samejoint.

The improvement consists .in a more effective arrangement and simplifiedconstruction of the so-called chair, or piece which forms the top of thecrimped joint.

Thus in the drawings, the jaws l, Loperated by handles 2, 2, pivoted onthe bolt 3, attack the strap (which may be enclosed in a seal as shown)substantially edgewise forming it into the cross sectional configurationshown in Fig. 5. In this operation the lower edges or blades 5 of thejaws pass ander the strap, the edges of which are caught in the anglebetween the forming pins 6 and the upper surface of the blades 5. Thestrap is thereby thrown upwardly in the middle, and a jointvis formedwith hollows in its sides, to fit the facesof the forming pins 6. It isdesirable to form the top of the joint, 1. e. to flatten or crush itdown, to make the joint as flat on the boxes as practicable. For thispurpose I provide a split forming mem-' ber comprising two halves 7, 7,each formed with a recess 8 so that when the members 7, 7 are inalignment a complete forming surface for the top of the joint will beprovided. The bottom of the recesses 8, 8 (which form the top of thejoint) are slightly rounded, but substantially fiat.

Each of the forming. members 7 is provided with an extension 9, pivotedon the bolt 3, sunk into a recess in the outer vertical face or side ofthe adjacent jaw 1, and held therein by the head 9 and nut 10 on thebolt 3, so that each half of the formmg member moves rigidly with theadacent aw.

Thus the jaws are opened, (as when applying the tool to the strap), theforming member 7, 7 will be out of line (Fig. 4); when the jaws close onthe strap, however, the forming members 7, 7 will move toward alignment(Fig. 4), and by this time the jaws are completely closed. The form{ ingmembers will present in efiect a complete forming surface which flattensand forms the top of the joint (Fig. 2). I

The construction herein described eliminates the difficulty in causingan integral forming die or plate to assume the correct relative positionto the normal plane of the strap and to the sealing tool; The formingmember being divided into two halves, each moving with one of the jaws,necessarily the overlapped portion of the two former (Fig;

4) will be symmetrical with and (consider-- ing the forming surfaces tobe flat) perpendicular to the median line of the sealer, i. e. the linea--a through. the axis of the sealer, in the plane of, and half waybetween the handles. Inasmuch as the strap is firmly held in the notches5-5 referred to, and therefore its normal plane is always perpendicularto the same line H, it follows that the forming surface 8, 2% for thetop of the joint, from the time the forming members begin to overlap(Fig. t) until they come into complete alignment (Fig. 2), will at tlliMilt

ways be parallel to the normal plane of the strap and thus correctlymake a flat topped oint.

Having described my invention, I claim:

1. A sealing tool for joining metallic strap ends comprising a pair ofpivoted jaws, adapted to deflect the edges of superposed strap ends,including a split forming device. for forming the top of the resultingdeformation in the strap, having two halves each pivoted on the axis ofthe jaws and moving with the jaws, the halves of said device beingarranged to slide past each other so as to provide a complete formingsurface when thejaws are closed.

2. A sealing. tool for joining metallic strap ends, comprising a pair ofpivoted jaws, adapted to deflect the edges of super posed strap ends,including a split forming device adapted to form the top of theresulting deformation in the strap, said formmg device comprising twohalves, each pivoted on the axis of one of the jaws and locked againstpivotal movement relative to the jaw by a portion extending into arecess in said jaw, said forming device adapted to provide a completeforming surface for the top of the joint.

3. In apparatus of the class described and in combination, a pair ofplier-like jaws, a pivot therefor, a pair of forming devices eachadapted to mold one half of the upper side of a strap joint, each ofsaid devices being arranged outside the adjacent jaw, and pivoted on thejaw pivot, and engaged with the jaw by projecting into a recess thereinso as to be moved thereby.

4i. In a sealing tool, a pair of plier like jaws, a pivot therefor, apair of forming devices mounted on said pivoteach adapted to formone-half of the upper side of a strap joint, said forming devices beingslidable each past the other so that when said jaws are in fullyoperative position said forming devices provide a complete formingsurface for the top of the joint.

5. In a sealing tool, a pair of plier like jaws, a pivot therefor, apair of forming devices, each adapted to form one-half of the upper sideof a strap joint, each of said devices being pivoted on the jaw pivotand having a part projecting into a recess in the adjacent jaw, saiddevices being slidable each past the other so that when said aws are infully operative position they provide a complete forming surface for thetop of the joint.

6. In a sealing tool, a pair of pivoted aws adapted to deflect the edgesof superposed strap ends, a split forming device adapted to form the topof the resulting deformation in the strap, said forming devicecomprising two halves each mounted on the pivot of the jaws and lockedagainst pivotal movement relative to the jaw by having a portionextending into a recess in the adjacent jaw, the halves. of said formingdevice being slidable each past the other so that when said jaws are infully operative position said halves provide a complete forming surfaceof the top of the strap joint.

7. In a sealing tool, a pair of plier like jaws, a pivot therefor, apair of forming devices each adapted to mold one-half of the upper sideof a strap joint, said devices being arranged on the opposite sides ofsaid jaws respectively, and pivoted on the jaw pivot, and fixed to thejaw by having a projection extending into a recess in the jaw, saidforming devices being slidable each past the other so that when saidjaws are in fully operative position said devices provide .a completeformingv surface for the top of the joint.

In testimony whereof, I have signed my name to this specification. V

LUELLA B.. FLORA, Ewemat rim of Ellsworth E. F Zora, deceased.

